MAMMALS OF THE MEXICAN BOUNDARY. 



403 



Border, which constitute a very homogeneous group. At present I am 

 including truei, hoylii, and even sfepliensi (which is near eremicus) in 

 the subgenus Peromyscus. The characters of the feet and tail in this 

 subgenus are indicated in fig. 79. 



a 



Fig. 79. — Peromyscus leucopus. o, forefoot; b, hindfoot; c, tail. 



PEROMYSCUS MEARNSII (Allen) 



MEARNS MOUSE. 



Vesperimus meamsii Allen, Bull. Am. Mus. Nat. Hist., Ill, No. 2, Art. XX, June 30, 



1891, p. 299 (original description). 

 Sifomys meamsii, Bryant, Zoe, III, Oct., 1892, p. 214.— Allen, Bull. Am. Mus. Nat. 



liist., VI, May, 1894, pp. 179-181. 

 P[eromyscus] meamsii, Attwater, Bull. Amer. Mus. Nat. Hist., V, Nov. 8, 1895, p. 331. 

 Peromyscus meamsi, Elliot, Field Col. Mus., Zool. Ser., II, 1901, p. 132 (Synop. Mam. 



N.Am.). 

 Peromyscus meamsii, Miller and Rehn, Proc. Bost. Soc. Nat. Hist., XXX, No. 1, 



Dec. 27, 1901, p. 78 (Syst. Results Study N. Am. Mam. to close of 1900). 



Type-locality. — Brownsville, Texas. (Type, skin and skull, in the 

 American Museum of Natural History.) 



Geographical range. — This species inhabits the Tamaulipan Trop- 

 ical Tract, in southern Texas, where it has been found, along the 

 Gulf of Mexico, in the strip of country extending from Rockport to 

 Brownsville. 



Description (based on seven topotypes). — Upper surface dusky 

 grayish-brown, suffused with fawn color, which is strongest on the 

 sides; under parts pure white in winter, grayish white in summer; 



